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Alexis King 0b21818100 Preserve syntax-original?-ness and syntax properties from splicing forms (#1413)
This makes two changes to the forms in racket/splicing to adjust how
syntax properties are propagated through expansion:

  1. Uses of make-syntax-introducer are passed #t as the first argument,
     which causes the introduced scope to be consider a use-site rather
     than macro-introduction scope. This prevents syntax objects from
     being unnecessarily marked as unoriginal, in the syntax-original?
     sense.

  2. Uses of syntax/loc have been adjusted to copy syntax properties
     from original syntax objects, which were previously discared. Forms
     that were spliced into the surrounding context, such as begin,
     define-values, and define-syntaxes, recreated the top-level syntax
     objects, which did not preserve syntax properties from the
     originals.

This is not a perfect solution, mostly because it potentially elides
properties that may be associated with captured literals (that is,
properties attached directly to begin, define-values, or define-syntaxes
identifiers themselves). However, it seems to accommodate most of the
common use-cases: propagation of syntax-original?-ness and forms like
`struct`, which attach properties like 'sub-range-binders.

fixes #1410
2016-08-19 06:33:20 -06:00
pkgs Preserve syntax-original?-ness and syntax properties from splicing forms (#1413) 2016-08-19 06:33:20 -06:00
racket Preserve syntax-original?-ness and syntax properties from splicing forms (#1413) 2016-08-19 06:33:20 -06:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Add *.orig, *.rej and *.core files to gitignore. 2015-11-06 10:25:13 -06:00
.mailmap mailmap updates & fixes. 2013-04-03 18:10:22 -04:00
.travis.yml Fix CI tests for match test move. 2015-12-30 10:39:45 -05:00
appveyor.yml Fix CI tests for match test move. 2015-12-30 10:39:45 -05:00
INSTALL.txt Corrected a few typos in INSTALL.txt 2016-06-02 13:39:39 -05:00
Makefile Moved xrepl to be part of bootloader directly. 2016-07-26 10:14:38 -04:00
README.md Add info to README. 2016-07-13 10:38:54 -04:00

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